Đáp án:
1. It wasn't until they traveled by boat did they could swim.
2. It was not until I studied far from home did I get sick.
3. It was not until late autumn 1945 did I find out the Monday.
4. It was not until there was a lot of the homeless did they set up this social camp.
5. It was not until someone teased Teddy did he feel angry.
6. It was not until her wedding came could Alice be happy.
7. It was not until she was 22 was she a teacher.
~ Xin hay nhất ~
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